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Large-x F spin asymmetry inπ 0 production by 200-GeV polarized protons

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Zeitschrift für Physik C Particles and Fields

Abstract

The spin asymmetryA N for inclusive π0 production by 200-GeV transversely-polarized protons on a liquid hydrogen target has been measured at Fermilab over a wide range ofx F, with 0.5<p T<2 GeV/c. Atx F>0.3, the asymmetry rises with increasingx F and reaches a value ofA N=0.15±0.03 in the region 0.6<x F<0.8. This result provides new input regarding the question of the internal spin structure of transversely-polarized protons.

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Author notes

  1. F. C. Luehring

    Present address: Indiana University, 47405, Bloomington, IN, USA

  2. T. Nagamine

    Present address: SLAC, 94305, Stanford, CA, USA

  3. F. Nessi-Tedaldi & M. Nessi

    Present address: CERN, CH-1211, Geneva 23, Switzerland

Authors and Affiliations

  1. Argonne Natiaonal Laboratory, 60439, Argonne, IL, USA

    D. P. Grosnick, D. A. Hill, M. Laghai, D. Lopiano, Y. Ohashi, L. van Rossum, H. Spinka, D. G. Underwood & A. Yokosawa

  2. CEN-Saclay, F-91191, Gif-sur-Yvette, France

    J. Bystricky, F. Lehar & A. de Lesquen

  3. Fermi National Accelerator Laboratory, 60510, Batavia, IL, USA

    J. D. Cossairt, A. L. Read & L. van Rossum

  4. Hiroshima University, 724, Higashi-Hiroshima, Japan

    K. Iwatani

  5. Institute of High Energy Physics, Serpukhov, Russian Federation

    N. I. Belikov, A. A. Derevschikov, O. A. Grachov, Yu. A. Matulenko, A. P. Meschanin, S. B. Nurushev, D. I. Patalakha, V. L. Rykov, V. L. Solovyanov & A. N. Vasiliev

  6. Department of Physics, University of Iowa, 52242, Iowa City, IA, USA

    N. Akchurin & Y. Onel

  7. University of Occupational and Environmental Health, 807, Kita-Kyushu, Japan

    T. Maki

  8. Department of Physics, Kyoto University, 606, Kyoto, Japan

    H. En'yo, H. Funahashi, Y. Goto, K. Imai, Y. Itow, S. Makino, A. Masaike, K. Miyake, T. Nagamine, N. Saito & S. Yamashita

  9. Kyoto University of Education, 612, Kyoto, Japan

    R. Takashima

  10. Kyoto-Sangyo University, 612, Kyoto, Japan

    F. Takeutchi

  11. Laboratoire de Physiques des Particules, BP 909, F-74017, Annecy-le-Vieux, France

    K. Kuroda & A. Michalowicz

  12. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA

    N. Tanaka

  13. Dipartimento di Fisica, University of Messina, I-98100, Messina, Italy

    G. Salvato & A. Villari

  14. Northeastern State University, 74464, Talequah, OK, USA

    K. W. Krueger

  15. Physics Department, Northwestern University, 60201, Evanston, IL, USA

    F. C. Luehring & D. H. Miller

  16. Okayama University, 700, Okayama, Japan

    N. Tamura

  17. Osaka City University, 558, Osaka, Japan

    T. Yoshida

  18. T.W. Bonner Nuclear Laboratory, Rice University, 77251, Houston, TX, USA

    D. L. Adams, M. D. Corcoran, J. Cranshaw, F. Nessi-Tedaldi, M. Nessi, C. Nguyen, J. B. Roberts, J. Skeens & J. L. White

  19. Dipartimento di Fisica, University of Trieste, I-34100, Trieste, Italy

    A. Penzo, P. Schiavon & A. Zanetti

  20. University of Udine, I-33100, Udine, UD, Italy

    G. Pauletta

Authors
  1. D. L. Adams
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  2. N. Akchurin
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  3. N. I. Belikov
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  4. J. Bystricky
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  5. M. D. Corcoran
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  6. J. D. Cossairt
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  7. J. Cranshaw
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  8. A. A. Derevschikov
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  9. H. En'yo
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  10. H. Funahashi
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  11. Y. Goto
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  12. O. A. Grachov
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  18. K. W. Krueger
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  19. K. Kuroda
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  20. M. Laghai
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  24. F. C. Luehring
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  25. T. Maki
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  26. S. Makino
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  31. D. H. Miller
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  32. K. Miyake
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  33. T. Nagamine
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  34. F. Nessi-Tedaldi
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  35. M. Nessi
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  36. C. Nguyen
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  37. S. B. Nurushev
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  38. Y. Ohashi
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  39. Y. Onel
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  40. D. I. Patalakha
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  41. G. Pauletta
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  42. A. Penzo
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  43. A. L. Read
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  45. L. van Rossum
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  57. D. G. Underwood
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  58. A. N. Vasiliev
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  64. A. Zanetti
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Consortia

FNAL E704 Collaboration

Additional information

This work was performed at the Fermi National Accelerator Laboratory, which is operated by University Research Associates, Inc., under contract DE-AC02-76CH03000 with the U.S. Department of Energy. Work supported in part by the U.S. Department of Energy, Division of High Energy Physics, Contracts W-31-109-ENG-38, W-7405-ENG-36, DE-AC02-76ER02289, DE-AS05-76ER05096

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FNAL E704 Collaboration., Adams, D.L., Akchurin, N. et al. Large-x F spin asymmetry inπ 0 production by 200-GeV polarized protons. Z. Phys. C - Particles and Fields 56, 181–184 (1992). https://doi.org/10.1007/BF01555512

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  • DOI: https://doi.org/10.1007/BF01555512

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